riako
type: MusicGroup
genre: vocaloid
popularity: 3
followers: 71
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1ca04778df08fcf8e64477e4301dd7d8e5a5d5c97a1edb6684f4537ebd070eec
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e8c7e547-7727-4e6d-a254-ff81f7becf28.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e8c7e547-7727-4e6d-a254-ff81f7becf28.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e8c7e547-7727-4e6d-a254-ff81f7becf28
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca04778df08fcf8e64477e4301dd7d8e5a5d5c97a1edb6684f4537ebd070eec. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8c7e547-7727-4e6d-a254-ff81f7becf28.json and https://artists.proofprofile.net/proofs/artist/e8c7e547-7727-4e6d-a254-ff81f7becf28.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
album: フラッシュバック
  type: MusicAlbum
  date published: 2022-06-18
  track: フラッシュバック
    type: MusicRecording
    duration: PT2M25S
    duration ms: 145548
    explicit: false
    by artist: riako
    in album: フラッシュバック
      type: MusicAlbum
      date published: 2022-06-18
    genre: vocaloid
    isrc code: TCJPS2214572
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T08:01:13+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x85243809d1b136269fe6e4b659febe66e680a6f113e44a1e751ec1162edd5fcd
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPS2214572
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85243809d1b136269fe6e4b659febe66e680a6f113e44a1e751ec1162edd5fcd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPS2214572.
      date published: 2026-07-04T10:04:33Z
    audio: フラッシュバック
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 155.054
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.453
      additional property: Energy
        type: PropertyValue
        value: 0.844
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
        value: 0.002
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.295
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.627
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.036
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Flashback
  type: MusicAlbum
  date published: 2022-06-18
album: Honinfuzai no Tanjyoubi Kai
  type: MusicAlbum
  date published: 2022-06-29
album: 本人不在の誕生日会
  type: MusicAlbum
  date published: 2022-06-29
album: ikiru kill kill kill me baby
  type: MusicAlbum
  date published: 2022-07-08
album: 生きる KILL KILL KILL ME BABY
  type: MusicAlbum
  date published: 2022-07-08
album: EverydayOshigoto
  type: MusicAlbum
  date published: 2022-08-13
album: Everyday推し事
  type: MusicAlbum
  date published: 2022-08-13
album: Wonder Tuesday
  type: MusicAlbum
  date published: 2023-03-18
album: Wonder Tuesday
  type: MusicAlbum
  date published: 2023-03-18
album: Flashback (feat. Amulet)
  type: MusicAlbum
  date published: 2024-02-19